• a sociologist studying the complex way in which people interact (with each other) at parties
> interaction
• Keys A. Goods-producing business
bakery, shoe factory, oil plant, vegetable farm, coal mine, B. Service-providing business travel agency, grocery shop, bank, hotel, movie theater, hospital, public transport
group of similar things that belong together in some way :
• a set of tools • a set of chairs • a set of false teeth.
[C] commercial establishment; firm; shop • have/own one‘s own business • She runs a thriving grocery business. • Many small businesses have gone bankrupt
tertiary-industry
tertiary burns 三度烧伤(极严重的)
• industry, commercial undertaking that provides services :
the hotel, tourist, entertainment, etc industry
Comprehensive Questions: